Automatic device for coating the constituent elements of a laminated cohesive interwound band.



L- A. SUBERS. AUTOMATIC DEVICE FOR COATTNG THE CONSTITUENT ELEMENTS OF A LAMINATED COHESIVE INTERWOUND BAND. APPLICATION FILED AUGJT. I914.

Patented Sept. 26, 1916.

2 SHEETS-SHEET L. A'. SUBERS. AUTOMATIC DEVICE FOR COATING THE CONSTITUENT ELEMENTS or A LAMINATED COHESIVE INTERWOUND BAND. APPLICATlON FILED Aue.1l.1914.

2 SHEETSSHEET 2.

Patented Sept. 26, 1916.

L v u v V 1 V .5 5 \L \V. I O- 4 a Y n H 11A h: I lv A B v UNITED sTATEs PATENT oEEIoE LAWRENCE A. SUBEBS, OF EAST CLEVELAND, OHIO.

AUTOMATIC DEVICE FOR COATING THE CONSTITUENT ELEMENTS OF A LAMINATED COHESIVE INTEBWOUND BAND.

Specification of Letters Patent.

Patented Sept. 26, 1916.

Continuation of application Serial lio. 798,585, filed October 81, 1918. This application filed August 17, 1914. Serialllo.857,009.

To all whom it may concern:

, Be'it known that I, LAWRENCE A. Smmns, a citizen of the United States, and resident of East Cleveland, in the county of Cuyahoga and State of Ohio, have invented certain new and useful Improvements in AutomaticDevices for Coating the Constituent Elements of a Laminated Cohesive Inter- Wound Band, of which I hereby declare the following to be a full, clear, and exact description, such as will enable others skilled in the art to which it appertains to make and use the same.

The objects of the invention are to provide automatically acting mechanism for coating and saturating the component members of a laminated-cohesive-interwound fabric band, and also the exterior surface thereof. The mechanism is applicable for use with a machine for constructing said band described in my former application bearing Serial No. 668,625, filed December 30th, 1911, and is more definitely an improvement upon the coating and pulling device filed June 18th, 1912, Serial No. 704,410. This mechanism includes an improved form of hollow mandrel which widely separates the band elements from each other in their passage thereupon by means of a multiplication of expanding devices, which permits of a lesser expansion of the band over each indivldual expanding means and thereby decreases the force necessary to pull the band thereover.

Another feature is the angular relation of the one expanding means to the other, which permits of a free circulation, in and around the band members as they are drawn along, of the coating material, thereby assuring its wide and uniform distribution. The mandrel, being hollow, also allows an additional amount of the adhesive material, preferably liquid rubber, to be forced therethrough, coating the interiorof the hollow band.

A further improvement consists of a forked construction of the end of the mandrel, between the prongs of which act the gripping members of the pulling device which prevent the closing together of the prongs, the latter thus serving to retain the full width of the band while it is being securely gripped after which there i no Strain upon the band tending to narrow it or cause it to assume a rope like form.

An lmproved form of pulling mechanism is also employed in which gripping devices are utilized which fitinto each other and providea firm hold upon the bands by means of the pressure applied thereto, the pressure being resilient and adjustable as required.

A modified form of mandrel is also provlded in which the prongs of the forked end are extended to the full length of the pulling mechanism, the prongs being hollow and slit on their inner sides at their ends to allow liquid rubber or other adhesive coating material to be forced therethrough into the band beyond the point where it is being pp Means are also provided for spraying or flooding with naphtha or whatever solvent is required with the adhesivecoating material used, the gri ping portions of the pulling device to so ten and dissolve the deposits thereon, thereby facilitating the starting of the pulling mechanism.

These and other features of the invention are hereinafter described, shown in the accompanying drawings, and specifically pointed out in the claims.

In the accompanying drawings Figure 1 is a longitudinal section of a portion of the machine showing the band coating device and mechanism for pulling the band off from the mandrel; Fig. 2 is a plan view of the mandrel; Fig. 3 is a side elevation of the mandrel; Fig. 4 is a transverse section on line ii Fig. 2; Fig. 5 is a transverse section on line 00 Fig. 3; Fig. 6 is a longitudinal central section of the rubber receptacle through which the mandrel passes; Fig. 7 is a front View of the automatically adjusting closure for the end of the rubber receptacle where the cylindrical portion of the mandrel enters the same; Fig. 8 is a plan view of a modified form of inner extremity for the mandrel; Fig. 9 is a transverse section on line zz Fig. 8; Fig. 10 is a transverse section on line z z Fig. 8; Fig. 11 is a longitudinal central section of a portion of the vacuum chamber showing the mechanism for pulling the finished band off from the mandrel, and for applying pressure to a portion of the pulling mechanism to insure a positive gripping power upon the band; Fig. 12 is a transverse section through the pulling mechanism and supports therefor on line zz Fig. 11; Fig. 13 is a transverse section of the pulling device enlarged on line 2 -2. Fig. 11; Fig. 14 is a perspective view of one of the gripping blocks on the upper chain; Fig. 15 is a perspective view of one of the gripping blocks on the lower chain.

In these views Y is a hollow stationary mandrel support secured at one end to a tube into which fluid rubber is forced through a pipe D. The mandrel 4 is hollow and is detachably secured to the mandrel su port Y and its forward extremity upon whic the band is constructed is free so that the band can be passed thereover.

1" is the coating chamber containing fluid rubber or other adhesive material and through which the mandrel and hand thereon pass to coat every portion of the band.

B, R and R, R are sprocket wheels operated by means of any appropriate connecting mechanism with the rest of the machine and rotating with the shafts R, R upon which they are mounted.

Endless chains 5, 5 upon the sprocket wheels R and R respectively and shoes 5 and 5 thereon move in the same direction over the opposite sides of the band and serve to propel the band to withdraw it from the mandrel and lead it to the drying rolls H H which are located within the evaporating and dryin chamber, a portion of which is shown at Thepreferred form of hollow mandrel is clearly shown in Figs. 2, 3, 4, and 5 where 4 is the cylindrical portion over which the fabric band is drawn and upon which the fabric is constructed, as fully described in.

said prior applications.

4', 4 are oppositely placed lateral extensions or widened portions of the mandrel located thereon within the coating chamber 1, and 4, 4 are similar oppositely placed extensions upon the mandrel formed preferably at right angles to the extensions 4", 4".

The mandrel flattened at its extended or widened portions passes through the rubber receptacle and as the fabric band passes over these extensions it is first expanded in one direction and afterward in another, which has the useful effect of temporarily separating the fibrous strands and elements so that the rubber coating will have access to and coat the entire exposed surface thereof. The expansion of the fabric has the further useful effect of temporarily changing the relative angles at which the yarn elements cross each other and thereby exposing the surfaces of crossing points to the coating material, so that no spaces or corners will be left uncovered and the rubber will be thoroughly incorporated with all portions of the layers of the fabric. This action of expansion is first carried out by one set of extensions in one direction and again in another direction by the second set of extensions, and ma be ifngelinitely repeated until no portion 0 the a ough coating of all its elements.

The expanding devices in each pair have their extremities inclined and slightly overlap the extremities of the adjacent pair of expanding devices. This construction enables the fabric to pass easily from one set of expanding devices to another and to remain under a certain amount of tension all the time. The mandrel in this instance does not extend from end to end of the fabric propelling device but the extremity of the mandrel is forked at 4 and the propelling devices 5 and 5 engage the band between the prongs 4, 4 of the fork as shown in Fig. 13 and draw it from the mandrel. Liquid rubber or other adhesive material is forced through the hollow mandrel and emerges at the fork 4 thereby coating the interior of the fabric band in its distended position on the prongs 4 4. The prongs 4, 4 of the fork extend for a short distance on each side of the gripping devices. The shoes 5 and 5 compress the sides of the band together and the prongs 4, 4 of the fork retain the band in shape and prevent it from pulling out into a narrow rope form and from distortion of any kind. The gripping shoes 5 and 5 are so designed as to positively engage the band without doing it any injury and so as to retain it in its flattened shape between them after it leaves the mandrel.

The gripping devices are clearly shown in Figs. 11, 14 and 15 and comprise projections 5, 5 upon one set of shoes 5, 5 and depressions 5, 5 in the opposite set of shoes 5, 5. These serve to engage closely and carry the band between them until it passes to the drying and pulling rollers H, H in the vacuum chamber.

Adjustable and resilient pressure can be brought to bear upon the shoes by means of lateral projections 5, 5 upon the lower set of shoes, which pass through grooves 5 5 in bars 5 supported upon brackets 5 upon the wall of the chamber G and similar lateral projections 5", 5 upon the upper set of shoes which move in grooves 5' in vertically movable bars 5 mounted upon a support 5 which is slidably mounted upon the wall of the chamber G. Screws 5 mounted upon a rigidly supported bracket 5' and springs 5 provide means for applying adjustable pressure to the upper set of shoes.

An appliance for providing a free action of the chain and shoes when starting the machine is shown in Figs. 11 and 12 where 5 is a pipe running parallel with the upper me has escaped expansion and a thorrow of shoes and provided with perforations 5 arranged to discharge gasolene or other solvent'thereon and upon the chain so as to soften and dissolve any hardened coating that might adhere to the parts.

The solvent liquid is stored in a suitable tank 5, connected to the pipe by the pipes 5". A valve 5 allows the solvent to be applied or shut off.

In Figs. 8, 9, and 10 a modified form of mandrel is shown where the central opening in the mandrel is continued through the prongs 4, 4 of the fork and the fluid rubber issued on their. inner sides at the extremities at 4', 4 The prongs extend beyond the propelling device. This. construction serves to inject the liquid rubber through these openings into the interior of the band after the pressure of the shoes has been removed and hence there is no danger of squeezing out much of the rubber or adhesive material used.

The rubber applying receptacle 1 is provided with a resilient closure where the cylindrical portion of the mandrel enters therein, and consists of guided sliding sections F F controlled by one or more springs F. This closure makes close contact with the fabric band as it passes over the mandrel into the rubber receptacle and prevents the liquid rubber from escaping, yielding sufliciently to allow a knot or other small obstruction to pass. A similarly acting closure protects the end of the receptacle where the flattened portion emerges therefrom, consisting of gates 1 and 1, gate 1 secured by screw 1 and gate 1 sliding a predetermined amount under gibs 1", 1",

pressed by spring 1 suitably secured, thus permitting only the desired amount of liquid rubber to pass through on the fabric band. Sliding gates H and H protect the entrance of the band to the vacuum chamber G.

I do not confine myself to the exact arrangement of the various parts provided any modifications would be of material advantage in the development and perfection of the mechanism as outlined by the drawings and specification.

Having described the invention, what I claim as new and desire to secure by Letters Patent is:

1. In a mandrel for receiving a hollow fabric band, a flattened hollow body and flattened extensions thereof, arranged thereon at intervals on opposite sides thereof, one set of extensions lying at an angle to the other set of extensions, and means for pulling the fabric band along the mandrel.

2. In a mandrel for receiving a hollow fabric band, a flattenedhollow body and flattened extensions thereon, integral therewith, arranged thereon at intervals and in angular relation to each other, said mandrel being supported at one end, the opening therein extendin therethrough, and means for pulling the abric band along the mandrel.

3. In combination, in a mandrel for receiving a hollow fabric band, a flattened hollow body supported at one end, and sets of devices oppositely placed upon the mandrel for expanding the fabric, one set of expanding devices arranged at an angle to another set, and ameceptacle for fluid rubber through which the mandrel passes, and means for pulling the fabric band along the mandrel.

4. In a mandrel for receiving a hollow fabric band, the combination with a hollow flattened body portion open at the outer end, of fabric expanding means arranged thereon at intervals, said expanding means comprising extensions arranged in oppositely placed pairs, the pairs of extensions arranged at different angles, and provided with inclined extremities, the extremities of one pair of extensions overlapping the extremities of an adjacent pair, and means for pulling the fabric band along the mandrel.

5. The combination of a mandrel having a flattened hollow body and for receiving a hollow fabric, a forked extremity therefor, a pulling device, having a continuous outward movement and gripping devices on said pulling device adapted to engage said fabric between the prongs of said fork, and means for supplying liquid adhesive to said hollow mandrel, said mandrel being supported at one end and having an opening near the other end for the discharge of said adhesive.

6. In a hollow flattened mandrel, for receiving a hollow fabric band, a forked extremity, said fork serving to hold the band distended thereon, and expanding devices upon said mandrel, said expanding devices arranged at intervals upon said mandrel in pairs at different relative angles to each other, and means for pulling the fabric band along the mandrel.

7. In a mandrel, for receiving a hollow fabric, a hollow flattened body and oppositely placed expanding devices upon the body of the mandrel arranged in pairs, said 'pairs of extensions extending alternately in opposite directions.

8. In a coating and pulling device, a flattened hollow mandrel, a coating receptacle in which the mandrel is supported, said mandrel having a forked extremity, a series of expanding devices upon said mandrel arranged in pairs one pair extending laterally from the mandrel and another at right angles thereto, and a pulling device for the fabric, said pulling device engaging said fabric between the prongs of said fork.

9. In a mandrel for receiving a hollow fabric band, a flattened body and a plurality of sets of flattened extensions thereon, the

extensions in each set being on opposite sides of the body, one set of extensions lying at an angle to another set of extensions, and means for pulling the band along the mandrel. i r

10. In an apparatus for impregnating fibrous material 'with' adhesive, the combination of a mandrel for receiving a. hollow fabric band,'said mandrel having a hollow flattened portion and a second hollow flattened portion the interior of which communicates with the interior of said first mentioned hollow flattened portion, the lane of said second portion lying at" an angle to the 15 plane of said first portion, and means for pulling the band along the mandrel over said flattened portion. In testimony whereof, I hereunto set my hand this fourteenth day of August 1914. LAWRENCE A. SUBERS. In presence of Emwns'r MOSMAN, A. W. OSBORN. 

